Respiratory Bronchiolitis-associated Interstitial Lung Disease in a Nonsmoker with Biomass Fuel Exposure.

A 40-year-old nonsmoking female with a history of biomass fuel exposure presented with a persistent dry cough and progressive dyspnea, ultimately diagnosed as respiratory bronchiolitis-associated interstitial lung disease (RBILD) through transbronchial cryobiopsy. This case highlights the rare occurrence of RBILD in nonsmokers and emphasizes the diagnostic value of cryobiopsy in unexplained interstitial lung disease. Multidisciplinary collaboration was essential for accurate diagnosis and management.